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TY - CPAPER AU - Mapar, A. AU - Bieler, T.R. AU - Compton, C. AU - Kang, D. AU - Pourboghrat, F. TI - Crystal Plasticity Modeling of Single Crystal Nb J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - Deformation behavior of niobium (Nb) is not thoroughly studied, although it is widely used in manufacturing superconducting cavities. This deficiency of knowledge limits the predictibality in raw material properties for fine grain sheets, which are less anisotropic and easier to deform uniformly than large grain sheets. Studies on modeling and simulation of deformation of Nb are also limited. Therefore design of a new manufacturing procedure becomes a costly process, because models predicting the deformation of Nb are not accurate. A polycrystal is an aggregate of single crystals. Tensile tests were performed on single crystal with different orientations, to study the deformation behavior of Nb. A number of crystal plasticity models were developed, calibrated and finally used to predict the deformation of single crystal tensile samples. This study compares the predictions of these models. This provides a foundation for physically realistic polycrystal deformation models. PB - JACoW CY - Geneva, Switzerland SP - 228 EP - 232 KW - experiment KW - cavity KW - niobium KW - SRF KW - software DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB057 UR - http://srf2015.vrws.de/papers/mopb057.pdf ER -